Custom ActionResult equivalent Model for all PartialViews

You can initialize the MultiplePartialViewsResult object in the following manner with new own ViewData / ViewData.Model instances (works fine for me):

return new MultiplePartialViewsResult(    //PartialView("~/Views/RowSumView.cshtml", new List<double>() { 1.0 }),    //PartialView("~/Views/ColumnSumView.cshtml", new List<double>() { 2.0 })    new PartialViewResult() { ViewName = "~/Views/RowSumView.cshtml", ViewData = new ViewDataDictionary() { Model = new List<double>() { 1.0 } } },    new PartialViewResult() { ViewName = "~/Views/ColumnSumView.cshtml", ViewData = new ViewDataDictionary() { Model = new List<double>() { 2.0 } } });

Custom Action Result:

public class MultiplePartialViewsResult : ActionResult {    private const string Separator = "-";    private PartialViewResult[] _partialViews;    public MultiplePartialViewsResult(params PartialViewResult[] partialViews) {        _partialViews = partialViews;    }    public override void ExecuteResult(ControllerContext context) {        foreach(var partialView in _partialViews) {            partialView.ExecuteResult(context);            context.HttpContext.Response.Output.Write(Separator);        }    }}

Controller:

public ActionResult Index() {    return View();}public ActionResult FakeAction() {    return new MultiplePartialViewsResult(        //PartialView("~/Views/RowSumView.cshtml", new List<double>() { 1.0 }),        //PartialView("~/Views/ColumnSumView.cshtml", new List<double>() { 2.0 })        new PartialViewResult() { ViewName = "~/Views/RowSumView.cshtml", ViewData = new ViewDataDictionary() { Model = new List<double>() { 1.0 } } },        new PartialViewResult() { ViewName = "~/Views/ColumnSumView.cshtml", ViewData = new ViewDataDictionary() { Model = new List<double>() { 2.0 } } }    );}

Views:

Index:

@Html.Action("FakeAction")

ColumnSumView.cshtml / RowSumView.cshtml:

@model List<double><ul>    @foreach(double item in Model) {        <li>@item</li>    }</ul>